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Li-Fi tests carried out in Estonia

30 Nov 2015

An Estonian/Indian start-up firm has trialled a new technology dubbed ‘Li-Fi’ which utilises visible light waves to transmit data at speeds of up to 1Gbps, with the potential to reach up to 224Gbps according to lab tests. The company, Velmenni, uses LED light bulbs to carry data signals over light waves at frequencies of between 400 and 800 terahertz. While the technology could be up to 100 times faster than current Wi-Fi technologies, its use would be limited to indoor, line-of-sight applications since light cannot travel through walls and signals would be subject to interference from other light sources. Velmenni does claim that Li-Fi would be more secure than Wi-Fi, however, with the line-of-sight requirement meaning that there is no leakage to surrounding areas.


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